A multiple-choice examination consists of 85 questions, each having possible choices a, b, c, and d. Approximate the probability that a student will get more than 22 answers correct if he randomly guesses at each answer. (Note that, if he randomly guesses at each answer, then the probability that he gets any one answer correct is 0.25.) Use the normal approximation to the binomial with a correction for continuity.Round your answer to at least three decimal places. Do not round any intermediate steps.

Q: The mean percent of childhood asthma prevalence in 43 cities is 2.27​%. A random sample of 33 of…

A: Given : μ = 2.27 , σ= 1.27 and n= 33 By Central Limit Theorem, x̅ follows a Normal distribution…

Q: A group of people were asked if they had run a red light in the last year. 288 responded "yes", and…

A: Given,no.of people responded " yes"=288no.of people responded "no" =368Total no.of people=656

Q: A charity holds a raffle in which each ticket is sold for $45. A total of 9600 tickets are sold.…

A: We have the following information: Each ticket sold for $45. Total no. of ticket sold = 9600. The…

Q: A student takes a ten-question true-false quiz, but did not study and randomly guesses each answer.…

A: Given: Number of questions = 10Probability of getting correct =1/2 =  0.5 (because it is a true -…

Q: The data represent the results for a test for a certain disease. Assume one individual from the…

A: Here the given table is :- YesNoTotalPositive 13326159Negative 7134141Total140160300Using formula,

Q: O O O A social media survey found that 71% of parents are "friends" with their children on a certain…

A: As per the Bartleby guildlines we have to solve first three subparts and rest can be reposted....…

Q: The probability that a person living in a certain city owns a dog is estimated to be 0.2. Find the…

A: Note: (As per our standard guideline, we are supposed to answer only one question.I am solving first…

Q: The data represent the results for a test for a certain disease. Assume one individual from the…

A: Solution: The given information in the table form is    Yes No Total  Positive 133 13 146…

Q: Losses due to burglary are exponentially distributed with mean 100. The probability that a loss is…

A: The provided information is as follows:Loses due to burglary are exponentially distributed with a…

Q: A group of people were asked if they had run a red light in the last year. 409 responded "yes", and…

A:

Q: A student takes a true-false test consisting of 13 questions. Assuming that the student guesses at…

A:

Q: A poll found that 35​% of adults do not work at all while on summer vacation. In a random sample of…

A: According to the given information, we have Probability, p = 35% = 0.35 Sample size, n = 9

Q: 60% of all the town's residents own a dog and 61% own a cat. Of the dog owners, 48% also own a cat.…

A: Given: Pown a dog=0.60Pown a cat=0.61Pown a cat| own a dog=0.48 The probability that residents own a…

Q: The unemployment rate in a city is 12%. If 6 people from the city are sampled at random, find the…

A: p(unemployed) = p = 0.12n = 6p(x≤2) = ?

Q: The probability that a randomly selected adult has an IQ less than 128 is (Type an integer or…

A: Given:  Consider X as a random variable that follows a normal distribution with mean 22 and…

Q: Question 4 Assume that the probability of a randomly selected person getting in a car accident…

A: Here, given that probability of accident during the length of the insurance of the policy is 0.0014.…

Q: Attorneys often use lie detectors to test if a suspect is speaking the truth or not. It is found…

A:

Q: Question #1112 percent of U.S. residents are in their thirties. Consider a group of eight U.S.…

A: X: Number of . residents are in their thirtiesNown= number of residents in group=8p=P(in their…

Q: If an order is selected, find the probability of getting an order from Apple Bloom’s Café or an…

A:

Q: Lenovo produces laptop that last on average by 5 years. The life span of each laptop follows an…

A: I solved exactly first three subparts because of bartleby policy if you want more please uplode…

Q: Find the probability that a person flipping a coin gets (a) the seventh head on the eleventh flip,…

A: Given data isWe have to find probability forseventh head on the eleventh flipfirst head on third…

Q: A group of people were asked if they had run a red light in the last year. 496 responded "yes", and…

A:

Q: Suppose Z follows the standard normal distribution. Use the calculator provided, or this table, to…

A: The standard normal variable is z, which follows the normal distribution with the mean of 0 and…

Q: Use the appropriate table to solve this problem: At an online computer store 60% of computers sold…

A: Given that at an online computer store 60% of computers sold are laptops.

Q: The data represent the results for a test for a certain disease. Assume one individual from the…

A: The given summarized table is, The probability of he or she had the disease is,

Q: A group of people who was asked if they had a red light in the last year. 311 responded "yes" and…

A: From the provided information, A group of people who was asked if they had a red light in the last…

Q: Suppose that each student has probability p of correctly answering a question chosen at random from…

A: The probability of good student (Jennifer) p=0.90.

Q: The probability that eleventh person randomly interviewed in that city is the fourth one to own a…

A: p = 0.25 n = 11 r = 4

Q: The Catalina Bison win 60% of the puzzle competitions they enter. Find the n (it should be an odd…

A: Let n be the total number of competitions played by Catalina Bison and X denote the number of wins.…

Q: Find the indicated probability and interpret the result.   From 1975 through​ 2020, the mean annual…

A: The problem provides us with the following values:Population mean (μ) = 651Sample size (n) =…

Q: The data represent the results for a test for a certain disease. Assume one individual from the…

A: The individual actually had the disease   Yes No Positive 122 33 Negative 8 137

Q: Find the indicated probability and interpret the result. From 1975 through​ 2020, the mean annual…

A: Given data n=sample size=31 Standard deviations=1540 the probability that the mean gain for the…

Q: George is a big fan of music from the 1960s, and 22% of the songs on his iPod are Beatles songs.…

A: Given that  Population proportion p=22%=0.22 Sample size n =50

Q: A medical test is available to determine whether a patient has a certain disease. To determine the…

A: The total number of people tested is 9700. This is the total sample space for our probability…

Q: An earth-conscious clothing store offers a 15% discount if you bring in a bag full of old clothing…

A: From the given information, n=20 and p=0.69.